diff --git a/cedar-policy-generators/Cargo.toml b/cedar-policy-generators/Cargo.toml
index 9548fd9bc..37ec53f38 100644
--- a/cedar-policy-generators/Cargo.toml
+++ b/cedar-policy-generators/Cargo.toml
@@ -5,7 +5,9 @@ version = "4.0.0"
 publish = false
 
 [dependencies]
-arbitrary = "1.3"
+# We had to fix the version of `arbitrary` as well as `derive_arbitrary` because 1.4.x introduces a breaking change
+arbitrary = "=1.3.2"
+derive_arbitrary = "=1.3.2"
 cedar-policy-core = { path = "../cedar/cedar-policy-core", version = "4.*", features = ["arbitrary"] }
 cedar-policy-validator = { path = "../cedar/cedar-policy-validator", version = "4.*", features = ["arbitrary"] }
 clap = { version = "4.3.16", features = ["derive"] }